JP2006154651A - Caulking pipe inserting apparatus for optical fiber cable - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To automatically and easily press a caulking pipe in the jacket of an optical fiber cable from its tip without requiring troublesome manual inserting operation and to precisely inserting and positioning the caulking pipe. <P>SOLUTION: A caulking pipe inserting device is equipped with a cable holding portion 2 which can be moved forward and backward by an operation member L while the optical fiber P is inserted and set, a couple of guide members 3 which are arranged opposite each other to releases a spring-energized closed end from being pushed by a tip projection portion of the cable holding portion 2 moved forward by the operation member L and guide the caulking pipe S previously inserted into a coated optical fiber R, and a coated optical fiber passage portion 4 which has a tip of a stopper portion 4B of the caulking pipe S formed atop and inserts the coated optical fiber R while locking the tip of the caulking pipe S guided and moved forward by the guide member 3 to the stopper portion 4B. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention inserts an optical fiber cable inside a caulking ring provided in a stop ring in an optical connector for connecting an optical fiber cable, and caulking only the caulking ring without applying caulking force to the core of the optical fiber cable. The present invention relates to a caulking pipe for securely fixing an outer sheath of an optical fiber cable to an optical connector, and relates to a caulking pipe insertion device for an optical fiber cable for automatically inserting the caulking pipe into the outer sheath of the optical fiber cable.

Conventionally, as disclosed in Patent Document 1, the outer cover is removed from the tip of the optical fiber cable, and the exposed tensile strength wire is cut into a predetermined length, and then between the tensile strength wire and the core wire from the distal end side. Insert the caulking seat and push the caulking seat until the outer stepped part comes into contact with the end face of the jacket through the tensile strength line, then move the caulking ring inserted in the optical fiber cable in advance to the tip side, It covers the line part and the jacket tip part. And after fixing a ferrule to the front-end | tip part of a core wire, caulking is fixed as a connection part of an optical fiber cable by caulking from the outside using a special caulking tool.
JP 2004-133371 A

  According to the above-described prior art, even if the caulking is caulked from the outside, the jacket of the optical fiber cable can be securely fixed to the optical connector without applying caulking force to the core of the optical fiber cable. However, in the past, it was necessary to perform a very troublesome insertion work such as pushing the caulking seat into the outer cover by manual operation, and accurate positioning of the caulking seat could be very difficult. was there.

  Therefore, the present invention was created in view of the existing circumstances as described above, and when inserting a caulking pipe serving as a caulking seat into the jacket from the tip of the optical fiber cable, it is troublesome to insert manually. It is an object of the present invention to provide a caulking pipe insertion device for an optical fiber cable that can be automatically pushed in without requiring work, and that the caulking pipe can be inserted and positioned accurately.

  In order to solve the above-described problems, in the present invention, in a state where an optical fiber cable is inserted and set, a cable holding portion that can be moved forward or backward by an operating member, and a cable that moves forward by the operating member A guide member formed by a pair of opposing members arranged on both sides so as to push and release the spring-biased closed end and guide the caulking pipe inserted in advance into the core wire by the tip protruding portion of the holding part, and the caulking pipe A stopper part is formed at the tip, and the caulking pipe is moved forward while being guided by the guide member, and the core wire is inserted in a state where the tip of the caulking pipe is locked to the stopper part. And a core wire passage portion to be inserted into the core.

  The cable holding portion has a line-shaped insertion opening portion that is inserted and set while holding and holding the optical fiber cable by an elastic body, and in the front-rear direction along the center guide portion of the pedestal with side frames erected on both sides. It can be configured as slidable.

  The cable holding portion contacts the outer line from the inner line formed on the side surface of the cable holding portion so that the optical fiber cable is moved forward while being strongly tightened by elastically clamping the insertion opening portion in the closing direction. A pair of guide rollers that can be provided may be provided on the side frames on both sides.

  The operation member can be formed by a movable lever provided on both sides of the cable holding portion and a fixed lever provided on both sides of the guide member.

  In the caulking pipe insertion device for an optical fiber cable according to the present invention configured as described above, the cable holding portion into which the optical fiber cable is inserted and set is moved forward by the operation member.

  At this time, since the guide rollers on both sides make a contact transition from the inner line to the outer line, the insertion opening is elastically pinched in the closing direction, and the optical fiber cable is moved while being strongly tightened.

  The leading end protruding portion of the cable holding portion that moves forward presses the closed ends of the pair of guide members that are arranged opposite to each other to open the guide member against the spring biasing force.

  Then, the caulking pipe inserted in advance into the core wire is guided by the guide member to advance linearly, and the core wire is inserted into the core wire passage portion in a state where the end of the caulking pipe is in contact with and locked to the stopper portion of the core wire passage portion. As a result, the rear end side of the caulking pipe is inserted into the jacket of the optical fiber cable.

  According to the present invention, when the caulking pipe is pushed into the jacket from the tip of the optical fiber cable, the caulking pipe can be automatically pushed in easily without requiring troublesome insertion work, and the caulking pipe can be inserted and positioned. It can be done accurately.

  That is, this is because the present invention includes a cable holding portion that can be moved forward or backward by the operating member in a state where the optical fiber cable is inserted and set, and a tip protruding portion of the cable holding portion that moves forward by the operating member. The spring-biased closed end is pressed and released to guide the caulking pipe inserted in advance into the core wire, and a pair of opposing guide members arranged on both sides and a caulking pipe stopper are formed at the tip. A core wire passage portion for inserting the rear end side of the caulking pipe into the inner sheath of the optical fiber cable by inserting the core wire in a state where the front end of the caulking pipe guided and guided by the guide member is locked to the stopper portion; As a result, the caulking pipe is automatically and securely arranged inside the jacket of the optical fiber cable. Can be pushed into, for example Kashimepaipu tip can be accurately perform the insertion position of Kashimepaipu so that such exposed state about 1mm from the envelope tip.

  The cable holding portion has a line-shaped insertion opening portion that is inserted and set while holding and holding the optical fiber cable by an elastic body, and in the front-rear direction along the center guide portion of the pedestal with side frames erected on both sides. Since it is configured to be slidable, it can be automatically pushed in by the operation member without requiring a troublesome manual insertion operation of the caulking pipe.

  The cable holding portion contacts the outer line from the inner line formed on the side surface of the cable holding portion so that the optical fiber cable is moved forward while being strongly tightened by elastically clamping the insertion opening portion in the closing direction. Since the pair of guide rollers on both sides are provided on the side frames on both sides, it is possible to prevent the optical fiber cable from detaching outward from the insertion opening portion when the cable holding portion is moved forward by the operating member. can do.

  Since the operation member is formed by a movable lever provided on both sides of the cable holding part and a fixed lever provided on both sides of the guide member, the cable holding part can be easily moved and is easy to use. Is.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings. Reference numeral 1 shown in the drawing automatically pushes a caulking pipe S as a caulking seat into the outer jacket Q of the optical fiber cable P. 1 to FIG. 4, the apparatus main body 1 includes a cable holding portion 2 that can be moved forward by an operating member L, and a core wire R, as shown in FIGS. The guide member 3 that guides the caulking pipe S that has been inserted in advance, and a core wire passage portion 4 that has a stopper portion 4A of the caulking pipe S formed at the tip thereof are generally configured.

  That is, the apparatus main body 1 is erected so that a pair of side frames 12A and 12B having a substantially U-shaped frame shape are opposed to each other on the left and right sides along the longitudinal direction of a substantially rectangular plate-like pedestal 11. In addition, a guide roller 13 is disposed opposite to each of the U-shaped upper piece portions of both side frames 12A and 12B so as to be horizontally rotatable by a vertically long support shaft 14. A guide rail 15 is provided in the center of the base 11 along the longitudinal direction, and a slide recess 16 that is recessed along the longitudinal direction at the center of the lower surface of the cable holding portion 2 is engaged with the guide rail 15. The guide roller 13 is arranged in contact with the inner line 17A and the outer line 17B connected to the outer surfaces of a pair of blocks 2A and 2B, which will be described later, facing the left and right sides of the cable holding portion 2, respectively. The holding part 2 is formed so as to be slidable in the front-rear direction on the base 11.

  Also, a pair of handle-type movable levers L1 in the form of horizontal protrusions for operating the cable holding unit 2 to be slid by hand as the operating member L are formed on the front end side of the left and right side surfaces of the cable holding unit 2. . Furthermore, along the longitudinal direction of the upper surface side of the cable holding part 2, a line-shaped insertion opening part 21 is formed for inserting and setting the optical fiber cable P while holding it with an elastic body. As the movable lever L1, various other handle shapes such as an annular handle may be adopted instead of a pair of left and right horizontal protrusions.

  That is, as shown in FIG. 4, the insertion opening 21 has an accommodation recess on one block 2A (2B) side of the pair of blocks 2A and 2B facing left and right that can move in the expanding and closing directions. 22 and the expansion springs 23 are compressed and interposed between the blocks 2A and 2B so that the blocks 2A and 2B are urged to expand each other. The lines 17B are in pressure contact with the guide rollers 13 on the side frames 12A and 12B. As shown in FIGS. 4, 5, and 7, an elastic body 18 is provided along the longitudinal direction on each of the upper inner wall surfaces of the pair of blocks 2 </ b> A and 2 </ b> B that face each other. The optical fiber cable P is inserted and set while being elastically held under pressure.

  Thus, as shown in FIGS. 5 and 6, when the guide roller 13 is joined to the inner line 17A of the pair of blocks 2A and 2B, the insertion opening 21 is slightly opened and the optical fiber cable P is removed. When the guide roller 13 is joined to the line 17B outside the pair of blocks 2A and 2B, that is, when the cable holding part 2 is moving forward, the insertion opening part 21 is The optical fiber cable P is clamped and held in a slightly blocked state.

  Further, as shown in FIGS. 7 and 8, a caulking pipe insertion port 24 is formed at the front end position of the insertion opening portion 21 in the cable holding portion 2, and the jacket Q of the optical fiber cable P inserted into the insertion opening portion 21. However, the optical fiber cable P is pushed to a position where it hits the opening edge of the caulking pipe insertion port 24, and the front side of the caulking pipe S is exposed together with the core wire R from the opposite side of the caulking pipe insertion port 24.

  As shown in FIGS. 1, 5, and 7, the guide member 3 is opposed to the left and right, which is swingable by a support shaft 3 </ b> D on the base end side of the fixed lever L <b> 2 so that it can be opened and closed like a door toward the front. A pair of guide levers 3A, 3B is always biased in the closing direction by a tension spring 3C (see FIG. 5), and a pair of fixing levers L2 in the form of horizontal protrusions for holding the guide member 3 by hand is provided. Is formed. Then, the closed end urged by the tension spring 3C is pressed and released by the distal end protruding portion in the caulking pipe insertion port 24 of the cable holding portion 2 that moves forward by the operation of the movable lever L1 (see FIG. 7), The inserted caulking pipe S is guided. The fixed lever L2 is disposed at a distance at which both the levers can be gripped by the hand in a state of being farthest from the movable lever L1 as the operation member L (before operation).

  The core wire passage portion 4 is provided on the upper side of the block 4A fixed on the front side of the center of the base 11 so as to face the caulking pipe insertion port 24 of the cable holding portion 2. On the side, a concave stopper portion 4B having a diameter larger than the hole diameter of the core wire passage portion 4 is formed. In this way, by inserting only the core wire R into the core wire passage portion 4 with the tip of the caulking pipe S guided and guided forward by the guide member 3 being locked to the stopper portion 4B, the rear end side of the caulking pipe S is made light. The fiber cable P can be smoothly inserted inside the jacket Q.

  As shown in FIGS. 6 and 8, the stroke range of the forward movement of the cable holding portion 2 is that when the caulking pipe S locked to the stopper portion 4 </ b> B is inserted inside the jacket Q, the tip of the jacket Q The size is set such that the caulking pipe S is exposed by about 1 mm.

  Next, a method of using the caulking pipe insertion device in this configuration will be described. First, as shown in FIG. 9, the jacket Q is removed from the tip of the optical fiber cable P, and the caulking pipe S is inserted from the tip end side of the core wire R. The caulking pipe S is moved to the root position of the jacket Q. In this state, as shown in FIGS. 5 and 6, the optical fiber cable P is inserted into the insertion opening portion 21 in the cable holding portion 2 of the apparatus body 1 while taking care that the caulking pipe S does not fall off. The optical fiber cable P is pushed in to a position where it comes into contact with the opening edge of the caulking pipe insertion port 24 on the distal end side of the insertion opening 21. At this time, if the tensile strength line (Kevlar) K at the root position of the outer jacket Q is folded back in the opposite direction to the insertion direction, the operation is easy.

  Then, as shown in FIGS. 7 and 8, while lightly pressing the optical fiber cable P, the fixed lever L2 and the movable lever L1 as the operation member L are hooked on the hand and moved to the front of the lever L1. At this time, the guide rollers 13 on both sides contact and move from the inner line 17A to the outer line 17B, and the optical fiber cable P itself is strongly tightened by elastically pinching the insertion opening 21 in the closing direction. Part 2 moves. At the same time, the front end protruding portion of the cable holding portion 2 that moves forward presses the closed ends of the pair of guide members 3 that are opposed to each other to open the guide member 3 against the urging force of the tension spring 3C. The caulking pipe S inserted in advance in the core wire R is guided by the guide member 3 and advances linearly.

  Then, by inserting the core wire R into the core wire passage portion 4 in a state where the front end of the caulking pipe S is abutted and locked to the stopper portion 4A of the core wire passage portion 4, the rear end side of the caulking pipe S is outside the optical fiber cable P. It is to be inserted inside the product Q. When the hand is released from the movable lever L1 or the like, the cable holding portion 2 is pushed back by the urging of the tension spring 3C in the closing direction of the closed end of the guide member 3 to return to the rear position, and the optical fiber from the insertion opening portion 21 is returned. The cable P is taken out and the operation is completed. Thereafter, it is confirmed whether the caulking pipe S is exposed to about 1 mm from the tip of the outer jacket Q (see FIG. 10).

  Further, a ferrule 31 that accommodates the end portion of the core R of the optical fiber cable P, a spring 32 that biases the ferrule 31 toward the distal end side, a stop ring 33 that supports the proximal end portion of the spring 32, and a distal end side of the stop ring 33 are covered. When the optical connector 30 (see FIG. 12) comprising the plug frame 34 and the boot 35 attached to the end of the stop ring 33 is attached to the optical fiber cable P, as shown in FIG. After the caulking ring 36 inserted in advance in the optical fiber cable P is moved to the front end side so as to cover the front end portion of the jacket Q, the front end portion of the core wire R is fixed to the ferrule 31, and then the caulking ring 36 is moved outside. From the above, it is fixed as a connection portion of the optical fiber cable P by caulking using a dedicated caulking tool (not shown). At this time, as shown in FIG. 12, the tensile strength line K is held between the rear end of the stop ring 33 and the front end of the caulking ring 36.

It is a top view which shows the best form for implementing this invention. It is a side view similarly. In FIG. 1, it is AA sectional drawing. In FIG. 1, it is BB sectional drawing. It is a partially notched top view which shows the state before the forward movement of a cable holding part. In FIG. 5, it is CC sectional drawing. It is a partially notched top view which shows the state after the forward movement of a cable holding part. In FIG. 7, it is DD sectional drawing. (A) thru | or (c) show sequentially the operation | work process which inserts a caulking pipe to the base position of a jacket. It is a partially cutaway side view showing a completed work state in which the rear end side of the caulking pipe is inserted inside the outer jacket of the optical fiber cable. It is a partially cutaway sectional view of a state where caulking is caulked from the outer side of the jacket. It is a half sectional view of the whole optical connector.

Explanation of symbols

P Optical fiber cable Q Outer sheath R Core wire S Caulking pipe K Tensile wire L Operating member L1 Movable lever L2 Fixed lever 1 Device body 2 Cable holder 2A, 2B Block 3 Guide member 3A, 3B Guide block 3C Pull spring 3D Support shaft 4 Core wire Passage 4A Block 4B Stopper 11 Pedestal 12A, 12B Side Frame 13 Guide Roller 14 Support Shaft 15 Guide Rail 16 Slide Recess 17A Inner Line 17B Outer Line 18 Elastic Body 21 Insertion Opening 22 Housing Recess 23 Expanding Spring 24 Caulking Pipe Insertion slot 30 Optical connector 31 Ferrule 32 Spring 33 Stop ring 34 Plug frame 35 Boot 36 Caulking ring

Claims (4)

  With the optical fiber cable inserted and set, a closed end that is spring-biased by a cable holding portion that can be moved forward or backward by the operation member and a tip protrusion of the cable holding portion that moves forward by the operation member The guide member is a pair of oppositely arranged guide members on both sides so as to guide the caulking pipe inserted in advance into the core wire, and the caulking pipe stopper is formed at the tip, and is guided by the guide member to advance A core wire passage portion for inserting the rear end side of the caulking pipe into the inner jacket of the optical fiber cable by inserting the core wire with the tip of the moved caulking pipe locked to the stopper portion. Caulking pipe insertion device for optical fiber cable.   The cable holding portion has a line-shaped insertion opening portion that is inserted and set while holding and holding the optical fiber cable by an elastic body, and in the front-rear direction along the center guide portion of the pedestal with side frames erected on both sides. 2. An optical fiber cable caulking pipe insertion device according to claim 1, wherein the optical fiber cable is configured to be slidable.   The cable holding part is configured to be able to come into contact with the outer line from the inner line in the cable holding part so that the optical fiber cable is moved forward while being strongly tightened by elastically clamping the insertion opening part in the closing direction. The caulking pipe insertion device for an optical fiber cable according to claim 2, wherein a pair of guide rollers are provided on the side frames on both sides. 4. The caulking pipe device for an optical fiber cable according to claim 1, wherein the operation member is formed by a movable lever provided on both sides of the cable holding portion and a fixed lever provided on both sides of the guide member. .

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